Millwright-vise.



nu. 637,978. Patented Nov. 28, |899.

J. F. vALLlnE.

MILLWHIGHT VISE.

(Application Bled Oct. 7, 1899.) (No Model.)

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,INS/'INTERI NITED STATES PATENT Frio MILLWRIGHT-VISE.

vSPI]CIFICA'IION forming' part of Letters Patent No. 637,978, datedNovember 2S, 1899. Application tiled October '7, 1899) Serial No.732,870. (No model.)

T0 all whom zit Hetty concern:

Be it known that I, JOSEPH F. VALLIRE, a subject of the Queen of GreatBritain, residing at Whitins, in the county of Worcester and State ofMassachusetts, have invented a new and useful Improvement in Millwright-Vises, of which the following is a specification.

Thisiuvention has reference to an im prove-` ment in the class of woodenvises used by millwrights and carpenters.

The invention consists in the peculiar and novel construct-ion wherebygreat latitude is secured in the adjustment, so that lumberI and timbervarying greatly in thickness may be firmly secured, as will be morefully set forth hereinafter. j

In a vise of the nature described it is important that the saine may bequickly adjusted to thevarying dimensions of the tim,-

ber or board to be secured without using the` operatives hands, whichare fully employed in holding the timber. i

The object of the invention is to facilitate the adj ustment withinwidely-differing thicknesses of timber or boards.

Figure 1 is a side view showing my iinproved wooden vise in solid linesin the positionoccupied by the parts when a piece of timber is clampedin the vise and in broken lines when the vise is released. Fig. 2 isafront view of the same. Fig. 3 is a top view of the vise. Fig. 4 is aview of a block connecting the operative footlever with thetogglejointed lever. Fig. 5 is a top view, partly in section, of theoperating-levers.

In the drawings, d indicates, preferably, the floor; but it may be abase to which the vise is secured. Wooden vises of the nature describedare usually used in connection with a bench. They may be usedindependent of a bench orsecured to a bench in any suitable manner.

The fixed upright b, the upper end of which forms the fixed jaw, issecured to the floor or to a suitable base, preferably by means of theangle-irons b b', secured to the lower end of the upright b and to thefloor or base. The braces b2 b2, secured at one of their ends to thedoor or base, have their other ends 'secured to the upper part of theupright b near the fixed jaw b3.

The movable upright c, the upper end of which forms the clamping-jaw c',is supported ou the fulcru1nbar c2, which extends through slots in theuprights 1i and c below the jaws b3 ando'. The fulcruin-bar istransversely slotted, the wedges c3 and c4 extending horizontallythrough the slots in the fulcrum-bar c2. The wedge c4 is preferablyprovided on its beveled edge with ratchet-tooth projections which engagewith the fulcrum-bar, so that the same will be securely held in theadjusted position.4 The lower end of the upright o is provided with thelongitudinal slot c5 and the upright b with a similar slot.

The foot-lever d extends through the slot c5 anda corresponding slot inthe fixed uprightb. The foot-lever d is provided at its rear end withthree holes and is pivotally connected to the upward-extending arms d of`the brackets dz, secured to the floor or base.

The upper ends of the arms d' are connected with the upright Z7 by thestraps d3. The1ever cllis also provided at its rear end with Vtwo ormorel holes and is pivota'lly secured `to the arms d', preferably at thepoints where.

the straps d3 are secured. The front end of the lever d4 is pivotallysecured to the lever d5, the front end of which is pivotally secured tothe upright c. The lever d5 is connected with the foot-lever dby thestrap-block d, so that the levers Z4 and d5,formin g toggle-j ointedlevers, may be operated by the foot-lever. The springeservesto open thejaws of the wooden vise when released.

In operating my improved vise the wedge c4 is placed in the requiredposition to approximately adjust the fulcrum-bar c2 to the size of thewood intended to be secured. The wedge c3 is drawn out so that thenarrowest part is in the slot of the fulcru m-bar c2. The operative nowplaces the board or timber between the jaws c and b3 and while holdingit pushes, usually with his body, the wedge cB inward until the jaw cbears against the wood or other material to be secured. The 0perativenow presses down the foot-lever d with his foot, thereby bringing thetoggle-jointed levers d4 and d5 into the straight line, as shown insolid lines in Fig. l, and forcing the lower part of the upright coutward and the jaw c' inward to clamp the article and firmly secure thesame.

IOO

By the use of the fulcrum-bar c2 and the Wedges c3 and c4 the vise maybe readily adjusted Within a wide range, and for eXtreme differences thefoot-lever d and the lever d4 may be adjusted, while for ordinary usethe natural spring of the wooden upright c will I be sufficient to bringthe toggle-j ointed levers into the locked position, as shown in Fig. l.

Having thus described my invention, I claim as new and desire to secureby Letters Patentl. In a vise of the nature described, thel combinationwith the uprights provided with the clamping-jaws, and a fulcrum-barsupported in slots in the uprights and transversely slotted,of twowedges supported in the slots of the fulcrum-bar and bearing against theuprights, and a toggle-jointed lever operated by a foot-lever, wherebythe clampingjaw may be adjusted and operated, as described.

2. In a vise of the nature described, the combination with the uprightsb and c, the slotted fulcrum-bar c2 and the Wedges 08 and c, of thetoggle-jointed levers d4 and d5, the foot-lever d,and connectionsbetween the footlever and the togglejointed levers; whereby theclamping-upright may be adjusted by a wedge forming the fulcrum of the`clampingupright and the article secured by operating the toggle-jointedlever through the footlever, as described.

3. In an organized vise of the nature described, the combination withthe fixed upright b secured to a iioor or base, the arms d d and thebraces b2 b2, of the movable upright c, the fulcrum-bar c2, extendingthrough slots in the uprights b and c, below the jaws b3 and c',transverse slots in the fulcrum-bar, the wedges c3 and c4 extendingthrough the slots in the fulcrum-bar and bearing on the nprights, thefoot-lever pivoted in the arms d and extending in front of the vise, thetoggle-jointed levers d4 and d5 connected with the arms d and theupright c, the strap-block d6 connecting the toggle-jointed levers withthe foot-lever and the bars cl3 d3 connecting the arms d d with theupright b; whereby the jaws may be adjusted to the dimensions of thetimber required to be secured and the strains exerted are virmlyresisted, as described. 4

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

JosEPI-I F. VALLILRE.

